How can you send an excel that keeps a custom color theme?

[greshy]

I can create a custom color theme easily. But so far, any tricks I have come
up with to send the spreadsheet to others with the custom color theme have
failed and the theme does not go to the other person.

Even if I send the theme seperately and have them import the theme, it will
not show up on the other users computer.

What good is having custom color themes if using them turns spreadsheets
ugly for others???

Any insight would be helpful. Thanks!